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PUBLIC HEALTH SERVICES <br /> SAN JOAQUIN COU,NTY <br /> ENVIRONMENTAL HEALTH DIVISION XJ <br /> Karen Furst, M.D., M.PH., Health Officer <br /> 304 East Weber Avenue, Third Floor Stockton, CA 95202 <br /> 2091468-3420 <br /> TILE, COPY <br /> LORI SHIELDS <br /> DIESEL PERFORMANCE INC JUN12 1998 <br /> 2804 EAST FREMONT STREET <br /> STOCKTON CA 95205 <br /> Re: DIESEL PERFORMANCE, INC <br /> 2804 EAST FREMONT STREET <br /> STOCKTON CA 95205 <br /> San Joaquin County Public Health Services,Environmental Health Division(PHS/EHD)has reviewed the <br /> "Summary Report for Subsurface Investigation at 2804 East Fremont Street"which was prepared by Smith <br /> Technology Corporation on behalf of Diesel Performance, Inc.,dated October 20, 1997,and has the <br /> following comments for your consideration. <br /> PHS/EHD agrees that at this time the distribution of petroleum constituents in soil appears to be limited <br /> laterally. Vertical definition remains to be made. PHS/EHD recomiriendsat this time the installation of <br /> one monitoring well in the area of the former tank pit. Soil and water samples should be collected and <br /> analyzed for Total Petroleum Hydrocarbons(TPH)as gasoline,TPH as diesel and TPH as kerosene by <br /> EPA Methods 8015m; Benzene,Toluene,Ethylbenzene and Xylene by EPA Method 8020; and Methyl <br /> tertiary Butyl Ether by EPA Method 8260. Quarterly monitoring of the well should be initiated. <br /> Please submit a workplan to PHS/EHD to define the vertical extent of soil contamination in the former <br /> UST area and possible impact to ground water. After the vertical extent has been determined,the lateral <br /> extent can be evaluated. <br /> Please conduct a survey3and provide the location of all agricultural, industrial,domestic,municipal and <br /> other wells within a 2000 foot radius of this site in the work plan. The construction of these wells, if <br /> known, should also be provided. <br /> If you have any questions or commesits please contact Lori Duncan at(209)468-0337. <br /> Donna Heran,REBS,Director <br /> Environmental Health Division <br /> C <br /> Lori Duncan,REHS Margar�ago ,REHS <br /> Site Mitigation Unit Supervisor, Site Mitigation Unit <br /> cc: CVRWQCB-Mark List <br /> Smith Technology Corporation-Jeanne Homsey,P.E. ` <br /> f <br /> i <br /> A Division of San Joaquin County Hcalch Care Services 9F <br />